Myoepithelioma

Myoepitheliomas and malignant myoepitheliomas were considered a variant of pleomorphic adenomas until 1991. However, these are also found in breast and bronchus and have gained recognition as separate entities. They account for less than 1% of salivary gland tumours, only rarely undergo malignant transformation (0.2-0.45% of all malignant salivary gland tumours).